Restructuring and Other Costs, Net - Schedule of Restructuring and Other Costs, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	$ 5,714	$ 474	$ 9,903	$ 5,389
Personnel
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	3,371	13	6,420	250
Facilities
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	150	170	343	367
Restructuring Subtotal
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	3,521	183	6,763	617
Other
Restructuring Cost And Reserve [Line Items]
Restructuring and other costs, net	$ 2,193	$ 291	$ 3,140	$ 4,772